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Finding the Fourth Proportional to 150,678.64, 207,965.19 and 99,692.38

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Solution

The fourth proportional to 150,678.64, 207,965.19 and 99,692.38 is: 137,594.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,678.64 : 207,965.19 = 99,692.38 : x
  2. Step 2: Convert to fraction form
    150,678.64/207,965.19 = 99,692.38/x
  3. Step 3: Cross multiply
    150,678.64x = 207,965.19 × 99,692.38
  4. Step 4: Simplify right side
    150,678.64x = 20,732,544,748.25
  5. Step 5: Solve for x
    x = 20,732,544,748.25/150,678.64
  6. Step 6: Final answer
    x = 137,594.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.